Camera optical lens

ABSTRACT

Provided is a camera optical lens, which includes first to fourth lenses. The camera optical lens satisfies: 0.03≤R1/R2≤0.10; 1.00≤R3/R4≤1.50; 3.50≤R5/R6≤5.50; and 3.50≤d1/d2≤5.50, where R1 and R2 denote curvature radiuses of an object side surface and an image side surface of the first lens, respectively; R3 and R4 denote curvature radiuses of an object side surface and an image side surface of the second lens, respectively; R5 and R6 denote curvature radiuses of an object side surface and an image side surface of the third lens, respectively; d1 denotes an on-axis thickness of the first lens; and d2 denotes an on-axis distance from the image side surface of the first lens to the object side surface of the second lens. The camera optical lens has good optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices such as smart phones or digital cameras and camera devices suchas monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera optical lens is increasingly higher, but in general thephotosensitive devices of camera optical lens are nothing more thanCharge Coupled Devices (CCDs) or Complementary Metal-Oxide SemiconductorSensors (CMOS sensors). As the progress of the semiconductormanufacturing technology makes the pixel size of the photosensitivedevices become smaller, plus the current development trend of electronicproducts towards better functions and thinner and smaller dimensions,miniature camera optical lenses with good imaging quality have become amainstream in the market.

In order to obtain better imaging quality, the lens that isconventionally equipped in mobile phone cameras adopts a three-piecelens structure. However, with the development of technology and theincreasingly diverse demands of users, the pixel area of photosensitivedevices is becoming smaller and smaller and the requirement of thesystem on the imaging quality is increasingly higher, a four-piece lensstructure gradually emerges in lens designs. Although the commonfour-piece lens has good optical performance, its settings on refractivepower, lens spacing and lens shape still have some deficiencies, whichresult in that the lens structure cannot have a good optical performancewhile satisfying design requirements for ultra-thin, wide-angle lenseshaving large apertures.

SUMMARY

In view of the problems, the present disclosure provides a cameraoptical lens, which has high imaging performance while satisfying designrequirements for ultra-thin, wide-angle lenses having large apertures.

In an embodiment, the present disclosure provides a camera optical lens.The camera optical lens includes, from an object side to an image side,a first lens, a second lens, a third lens, and a fourth lens. The cameraoptical lens satisfies following conditions: 0.03≤R1/R2≤0.10;1.00≤R3/R4≤1.50; 3.50≤R5/R6≤5.50; and 3.50≤d1/d2≤5.50, R1 denotes acurvature radius of an object side surface of the first lens; R2 denotesa curvature radius of an image side surface of the first lens; R3denotes a curvature radius of an object side surface of the second lens;R4 denotes a curvature radius of an image side surface of the secondlens; R5 denotes a curvature radius of an object side surface of thethird lens; R6 denotes a curvature radius of an image side surface ofthe third lens; d1 denotes an on-axis thickness of the first lens; andd2 denotes an on-axis distance from the image side surface of the firstlens to the object side surface of the second lens.

As an improvement, the camera optical lens further satisfies a followingcondition: −0.30≤f1/f2≤−0.20, where f1 denotes a focal length of thefirst lens; and f2 denotes a focal length of the second lens.

As an improvement, the camera optical lens further satisfies followingconditions: 0.49≤f1/f≤1.74; −2.40≤(R1+R2)/(R1−R2)≤−0.71; and0.08≤d1/TTL≤0.26, where f denotes a focal length of the camera opticallens; f1 denotes a focal length of the first lens; and TTL denotes atotal optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies followingconditions: −11.54≤f2/f≤−2.36; 2.52≤(R3+R4)/(R3−R4)≤1103.10; and0.03≤d3/TTL≤0.10, where f denotes a focal length of the camera opticallens; f2 denotes a focal length of the second lens; d3 denotes anon-axis thickness of the second lens; and TTL denotes a total opticallength from the object side surface of the first lens to an image planeof the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies followingconditions: 0.25≤f3/f≤0.88; 0.72≤(R5+R6)/(R5−R6)≤2.70; and0.11≤d5/TTL≤0.40, where f denotes a focal length of the camera opticallens; f3 denotes a focal length of the third lens; d5 denotes an on-axisthickness of the third lens; and TTL denotes a total optical length fromthe object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies followingconditions: −1.17≤f4/f≤−0.33; 0.59≤(R7+R8)/(R7−R8)≤2.60; and0.04≤d7/TTL≤0.18, where f denotes a focal length of the camera opticallens; f4 denotes a focal length of the fourth lens; R7 denotes acurvature radius of an object side surface of the fourth lens; R8denotes a curvature radius of an image side surface of the fourth lens;d7 denotes an on-axis thickness of the fourth lens; and TTL denotes atotal optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.

As an improvement, the camera optical lens further satisfies a followingcondition: TTL/IH≤1.60, where IH denotes an image height of the cameraoptical lens; and TTL denotes a total optical length from the objectside surface of the first lens to an image plane of the camera opticallens along an optic axis.

As an improvement, the camera optical lens further satisfies a followingcondition: FNO≤2.20, where FNO denotes an F number of the camera opticallens.

As an improvement, the camera optical lens further satisfies a followingcondition: FOV≥78°, where FOV denotes a field of view of the cameraoptical lens.

As an improvement, the camera optical lens further satisfies a followingcondition: 0.57≤f12/f≤1.98, where f denotes a focal length of the cameraoptical lens; and f12 denotes a combined focal length of the first lensand the second lens.

The present disclosure has advantageous effects in that the cameraoptical lens according to the present disclosure has excellent opticalcharacteristics and is ultra-thin, wide-angle and has a large aperture,making it especially suitable for camera optical lens assembly of mobilephones and WEB camera optical lenses formed by high-pixel cameraelements such as CCD and CMOS.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a structural schematic diagram of a camera optical lensaccording to Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a structural schematic diagram of a camera optical lensaccording to Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a structural schematic diagram of a camera optical lensaccording to Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9;

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9;

FIG. 13 is a structural schematic diagram of a camera optical lensaccording to Embodiment 4 of the present disclosure;

FIG. 14 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 13;

FIG. 15 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 13; and

FIG. 16 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 13.

DESCRIPTION OF IMPLEMENTATIONS

The present disclosure will hereinafter be described in detail withreference to several embodiments. To make the technical problems to besolved, technical solutions and beneficial effects of the presentdisclosure more apparent, the present disclosure is described in furtherdetail together with the figure and the embodiments. It should beunderstood the specific embodiments described hereby is only to explainthe disclosure, not intended to limit the disclosure.

Embodiment 1

The present disclosure provides a camera optical lens 10. FIG. 1 showsthe camera optical lens 10 according to Embodiment 1 of the presentdisclosure. The camera optical lens 10 includes four lenses. Forexample, the camera optical lens 10 includes, from an object side to animage side, an aperture S1, a first lens L1, a second lens L2, a thirdlens L3, and a fourth lens L4. In the present embodiment, as an example,an optical element such as a glass filter (GF) can be arranged betweenthe fourth lens L4 and an image plane Si, and the glass fiber GF can bea glass plate or can be an optical filter. In other embodiments, theglass fiber GF can also be arranged at other positions.

In the present embodiment, the first lens L1 has a positive refractivepower, the second lens L2 has a negative refractive power, the thirdlens L3 has a positive refractive power, and the fourth lens L4 has anegative refractive power.

In the present embodiment, a curvature radius of an object side surfaceof the first lens L1 is defined as R1, a curvature radius of an imageside surface of the first lens L1 is defined as R2, a curvature radiusof an object side surface of the second lens L2 is defined as R3, and acurvature radius of an image side surface of the second lens L2 isdefined as R4, a curvature radius of an object side surface of the thirdlens L3 is defined as R5, a curvature radius of an image side surface ofthe third lens L3 is defined as R6, an on-axis thickness of the firstlens is defined as d1, and an on-axis distance from an image sidesurface of the first lens to an object side surface of the second lensis defined as d2. The camera optical lens 10 should satisfy followingconditions:

0.03≤R1/R2≤0.10  (1);

1.00≤R3/R4≤1.50  (2);

3.50≤R5/R6≤5.50  (3); and

3.50≤d1/d2≤5.50  (4).

The condition (1) specifies a shape of the first lens. This condition isbeneficial for the correction of spherical aberrations, so as to improvethe imaging quality.

The condition (2) specifies a shape of the second lens. This conditionis beneficial for reducing lens sensitivity and improving productionyield.

The condition (3) specifies a shape of the third lens. This condition isbeneficial for improving image quality.

When d1/d2 satisfies condition (4), the processing and assembly oflenses can be facilitated.

A focal length of the first lens L1 is defined as f1, and a focal lengthof the second lens L2 is defined as f2. The camera optical lens 10should satisfy a condition of −0.30≤f1/f2≤−0.20. When f1/f2 meets such acondition, the focal lengths of the first and second lenses can beeffectively allocated to correct aberration of an optical system, so asto improve the imaging quality.

In the present embodiment, the first lens L1 includes an object sidesurface being convex in a paraxial region, and an image side surfacebeing concave in the paraxial region.

Here, a focal length of the first lens L1 is defined as f1, and thefocal length of the camera optical lens 10 is defined as f. The cameraoptical lens 10 should satisfy a condition of 0.49≤f1/f≤1.74, whichspecifies a ratio of the refractive power of the first lens L1 to thefocal length f of the system. When the condition is satisfied, the firstlens L1 has an appropriate positive refractive power, therebyfacilitating the reduction of aberrations of the system whilefacilitating development towards ultra-thin, wide-angle lenses. As anexample, 0.78≤f1/f≤1.39.

A curvature radius of the object side surface of the first lens L1 isdefined as R1, and a curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 shouldsatisfy a condition of −2.40≤(R1+R2)/(R1−R2)≤−0.71, control a shape ofthe first lens L1 in such a manner that the first lens L1 caneffectively correct spherical aberrations of the system. As an example,−1.50≤(R1+R2)/(R1−R2)≤−0.89.

An on-axis thickness of the first lens L1 is defined as d1, and a totaloptical length from the object side surface of the first lens L1 to animage plane of the camera optical lens along an optic axis is defined asTTL. The camera optical lens 10 should satisfy a condition of0.08≤d1/TTL≤0.26, which can achieve the ultra-thin lenses. As anexample, 0.13≤d1/TTL≤0.21.

In the present embodiment, the second lens L2 includes the object sidesurface being convex in a paraxial region and the image side surfacebeing concave in the paraxial region.

A focal length of the second lens L2 is defined as f2, and a focallength of the camera optical lens 10 is defined as f. The camera opticallens 10 should satisfy a condition of −11.54≤f2/f≤−2.36. By controlli9ng the negative refractive power of the second lens L2 within anappropriate range, the aberration of the optical system can beadvantageously corrected. As an example, −7.22≤f2/f≤−2.95.

A curvature radius of the object side surface of the second lens L2 isdefined as R3, and a curvature radius of the image side surface of thesecond lens L2 is defined as R4. The camera optical lens 10 shouldsatisfy a condition of 2.52≤(R3+R4)/(R3−R4)≤1103.10, which specifies ashape of the second lens L2. This condition can facilitate thecorrection of an on-axis aberration with development towards ultra-thin,wide-angle lenses. As an example, 4.03≤(R3+R4)/(R3−R4)≤882.48.

An on-axis thickness of the second lens L2 is defined as d3, and thetotal optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.03≤d3/TTL≤0.10, which can achieve the ultra-thin lenses. As anexample, 0.04≤d3/TTL≤0.08.

In the present embodiment, the third lens L3 includes the object sidesurface being concave in a paraxial region and the image side surfacebeing convex in the paraxial region.

A focal length of the third lens L3 is defined as f3, and the focallength of the camera optical lens 10 is defined as f. The camera opticallens 10 further satisfies a condition of 0.25≤f3/f≤0.88. The appropriatedistribution of the refractive power leads to better imaging quality anda lower sensitivity of the system. As an example, 0.40≤f3/f≤0.71.

A curvature radius of the object side surface of the third lens L3 isdefined as R5, and a curvature radius of the image side surface of thethird lens L3 is defined as R6. The camera optical lens 10 shouldsatisfy a condition of 0.72≤(R5+R6)/(R5−R6)≤2.70, which specifies ashape of the third lens L3, thereby facilitating shaping of the thirdlens L3. This condition can alleviate the deflection of light passingthrough the lens while effectively reducing aberrations. As an example,1.16≤(R5+R6)/(R5−R6)≤2.16.

An on-axis thickness of the third lens L3 is defined as d5, and thetotal optical length from the object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.11≤d5/TTL≤0.40, which can achieve the ultra-thin lenses. As anexample, 0.18≤d5/TTL≤0.32.

In the present embodiment, the fourth lens L4 includes the object sidesurface being convex in a paraxial region and the image side surfacebeing concave in the paraxial region.

A focal length of the fourth lens L4 is f4, and the focal length of thecamera optical lens 10 is f. The camera optical lens 10 furthersatisfies a condition of −1.17≤f4/f≤−0.33, which specifies a ratio ofthe focal length f4 of the fourth lens L4 to the focal length of thesystem. This condition can facilitate the improvement of an opticalperformance of the system. As an example, −0.73≤f4/f≤−0.41.

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of the image side surface of thefourth lens L4 is defined as R8. The camera optical lens 10 shouldsatisfy a condition of 0.59≤(R7+R8)/(R7−R8)≤2.60, which specifies ashape of the fourth lens L4. This condition can facilitate thecorrection of an off-axis aberration with development towardsultra-thin, wide-angle lenses. As an example, 0.94≤(R7+R8)/(R7−R8)≤2.08.

An on-axis thickness of the fourth lens L4 is defined as d7, and thetotal optical length from the object side surface of the first lens L 1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. The camera optical lens 10 should satisfy a condition of0.04≤d7/TTL≤0.18, which can achieve the ultra-thin lenses. As anexample, 0.06≤d7/TTL≤0.14.

In the present embodiment, an image height of the camera optical lens 10is defined as IH, and the total optical length of the camera opticallens 10 is defined as TTL. The camera optical lens 10 should satisfy acondition of TTL/IH≤1.60, which can achieve the ultra-thin lenses.

In the present embodiment, an F number (FNO) of the camera optical lens10 is smaller than or equal to 2.20, thereby achieving a large apertureand high imaging performance.

In the present embodiment, a FOV (field of view) of the camera opticallens 10 is larger than or equal to 78°, thereby achieving the wide-angleperformance.

In the present embodiment, the focal length of the camera optical lens10 is defined as f, and a combined focal length of the first lens L1 andthe second lens L2 is defined as f12. The camera optical lens 10 shouldsatisfy a condition of 0.57≤f12/f≤1.98. This condition can eliminateaberration and distortion of the camera optical lens 10, suppress theback focal length of the camera optical lens 10, and maintain theminiaturization of the camera lens system group. As an example,0.91≤f12/f≤1.58.

When the above conditions are satisfied, the camera optical lens 10 willhave good optical performance while satisfying design requirements forultra-thin, wide-angle lenses having large apertures. With thesecharacteristics, the camera optical lens 10 is especially suitable forcamera optical lens assembly of mobile phones and WEB camera opticallenses formed by high-pixel imaging elements such as CCD and CMOS.

The following examples will be used to describe the camera optical lens10 of the present disclosure. The symbols recorded in each example willbe described as follows. The focal length, on-axis distance, curvatureradius, on-axis thickness, inflexion point position, and arrest pointposition are all in units of mm.

TTL: total optical length (total optical length from the object sidesurface of the first lens L1 to the image plane of the camera opticallens along the optic axis) in units of mm.

In an example, inflexion points and/or arrest points can be arranged onthe object side surface and/or image side surface of the lens, in orderto satisfy the demand for the high quality imaging. The specificimplementations are described below.

Table 1 and Table 2 shows design data of the camera optical lens 10according to Embodiment 1 of the present disclosure.

TABLE 1 R d nd νd S1 ∞ d0= −0.075 R1 1.614 d1= 0.625 nd1 1.5444 ν1 55.82R2 28.480 d2= 0.133 R3 2.440 d3= 0.238 nd2 1.6610 ν2 20.53 R4 1.836 d4=0.343 R5 −3.403 d5= 0.801 nd3 1.5444 ν3 55.82 R6 −0.756 d6= 0.062 R72.684 d7= 0.367 nd4 1.5444 ν4 55.82 R8 0.618 d8= 0.656 R9 ∞ d9= 0.210ndg 1.5168 νg 64.17 R10 ∞ d10= 0.225

In the table, meanings of various symbols will be described as follows.

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

S1: aperture;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of an object side surface of the optical filter GF;

R10: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between adjacentlenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the optical filter GF;

d9: on-axis thickness of the optical filter GF;

d10: on-axis distance from the image side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

vg: abbe number of the optical filter GF.

Table 2 shows aspheric surface data of respective lens in the cameraoptical lens 10 according to Embodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical coefficient k A4 A6 A8 A10 R1−4.7456E+00  1.9601E−01 −3.0798E+00  4.0655E+01 −3.2583E+02 R2−9.9000E+01 −3.2137E−01 −3.1191E+00  4.0410E+01 −2.6958E+02 R3−2.3889E+01 −9.4669E−03 −7.8877E+00  1.0014E+02 −7.5149E+02 R4 1.7406E+00  6.7436E−02 −4.7074E+00  4.1513E+01 −2.2484E+02 R5 1.1871E+01 −1.6529E−02  2.0777E+00 −2.1371E+01  1.1231E+02 R6−1.8758E+00  2.2745E−01 −4.9710E−01 −7.3607E−01  5.6554E+00 R7−9.8041E+01 −4.3100E−01  4.0269E−01 −4.1323E−01  4.8153E−01 R8−4.9533E+00 −3.3625E−01  4.1741E−01 −4.2303E−01  3.0415E−01 Asphericalcoefficient A12 A14 A16 A18 A20 R1  1.5700E+03 −4.5940E+03  7.9010E+03−7.2237E+03  2.6319E+03 R2  1.0693E+03 −2.5686E+03  3.6201E+03−2.7005E+03  7.9397E+02 R3  3.5112E+03 −1.0206E+04  1.7933E+04−1.7419E+04  7.1735E+03 R4  7.9762E+02 −1.8284E+03  2.6007E+03−2.0816E+03  7.1523E+02 R5 −3.5320E+02  6.9260E+02 −8.2963E+02 5.5588E+02 −1.5997E+02 R6 −1.3142E+01  1.6852E+01 −1.2328E+01 4.7758E+00 −7.5972E−01 R7 −3.5519E−01  1.5215E−01 −3.7678E−02 5.0453E−03 −2.8408E−04 R8 −1.4769E−01  4.6671E−02 −9.0780E−03 9.7511E−04 −4.3649E−05

In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14,A16, A18 and A20 are aspheric surface coefficients.

IH: image height

y=(x ² /R)/{1+[1−(1+k)(x ² /R ²)]^(1/2) }+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰  (5)

It should be noted that in the present embodiment, an aspheric surfaceof each lens uses the aspheric surfaces represented by the abovecondition (5). However, a specific form of the condition (5) is only anexample, and it is not limited to the aspherical polynomial formrepresented by the condition (5).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 according to thepresent embodiment of the present disclosure. P1R1 and P2R2 representthe object side surface and the image side surface of the first lens L1,respectively; P2R1 and P2R2 represent the object side surface and theimage side surface of the second lens L2, respectively; P3R1 and P3R2represent the object side surface and the image side surface of thethird lens L3, respectively; and P4R1 and P4R2 represent the object sidesurface and the image side surface of the fourth lens L4, respectively.The data in the column “inflexion point position” indicates verticaldistances from inflexion points arranged on each lens surface to theoptic axis of the camera optical lens 10. The data in the column “arrestpoint position” indicates vertical distances from arrest points arrangedon each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 1 0.585 P1R2 1 0.095 P2R1 2 0.275 0.595 P2R20 P3R1 0 P3R2 2 0.795 1.105 P4R1 2 0.205 0.945 P4R2 2 0.395 1.865

TABLE 4 Number of Arrest point Arrest point Arrest points position 1position 2 P1R1 0 P1R2 1 0.145 P2R1 2 0.545 0.635 P2R2 0 P3R1 0 P3R2 0P4R1 2 0.385 1.425 P4R2 1 1.075

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 430 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates a field curvature and a distortion oflight with a wavelength of 555 nm after passing the camera optical lens10 according to Embodiment 1, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

The following Table 17 below further lists various values of Embodiments1, 2, 3 and 4, and parameters which are specified in the aboveconditions.

As shown in Table 17, Embodiment 1 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the cameraoptical lens 10 is 1.249 mm. The image height is 2.300 mm. The FOV alonga diagonal direction is 78.30°. Thus, the camera optical lens 10 is anultra-thin, large-aperture, wide-angle lens in which the on-axis andoff-axis aberrations are sufficiently corrected, thereby leading tobetter optical characteristics.

Embodiment 2

FIG. 5 is a structural schematic diagram of a camera optical lens 20according to Embodiment 2. Embodiment 2 is basically the same asEmbodiment 1 and involves symbols having the same meanings asEmbodiment 1. Only differences therebetween will be described in thefollowing.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0= −0.090 R1 1.350 d1= 0.602 nd1 1.5444 ν1 55.82R2 14.978 d2= 0.110 R3 3.518 d3= 0.240 nd2 1.6610 ν2 20.53 R4 2.354 d4=0.281 R5 −2.502 d5= 0.809 nd3 1.5444 ν3 55.82 R6 −0.713 d6= 0.035 R78.628 d7= 0.428 nd4 1.5444 ν4 55.82 R8 0.715 d8= 0.656 R9 ∞ d9= 0.210ndg 1.5168 νg 64.17 R10 ∞ d10= 0.186

Table 6 shows aspheric surface data of respective lenses in the cameraoptical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical coefficient k A4 A6 A8 A10 R1−3.5568E+00 −6.5389E−02 4.4068E+00 −5.8114E+01 4.4982E+02 R2  7.5895E+01−3.1134E−01 −1.2886E+00   1.3011E+01 −8.1693E+01  R3 −3.1111E+01−2.9060E−01 3.5436E−01 −8.5204E+00 7.1513E+01 R4  5.2772E+00 −1.2928E−016.6491E−01 −9.0156E+00 6.5773E+01 R5  7.1568E+00  3.8124E−01−5.3452E+00   5.3227E+01 −3.3426E+02  R6 −2.1256E+00  3.7767E−01−2.1796E+00   6.9717E+00 −1.4763E+01  R7 −9.6922E+01 −4.6913E−015.0066E−01 −4.7959E−01 5.7073E−01 R8 −5.8244E+00 −2.7393E−01 2.9433E−01−2.4088E−01 1.2822E−01 Aspherical coefficient A12 A14 A16 A18 A20 R1−2.1972E+03 6.8046E+03 −1.2980E+04  1.3925E+04 −6.4365E+03 R2 3.2218E+02 −7.7764E+02   1.0769E+03 −7.3443E+02  1.5512E+02 R3−3.1456E+02 8.4641E+02 −1.3995E+03  1.3190E+03 −5.4651E+02 R4−2.7696E+02 7.3947E+02 −1.2368E+03  1.1810E+03 −4.8838E+02 R5 1.3316E+03 −3.3403E+03   5.1210E+03 −4.3885E+03  1.6120E+03 R6 2.0791E+01 −1.8117E+01   9.1936E+00 −2.4650E+00  2.6723E−01 R7−4.9394E−01 2.5965E−01 −8.0323E−02  1.3527E−02 −9.5598E−04 R8−3.8919E−02 3.9037E−03  1.1928E−03 −3.9092E−04  3.3019E−05

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according to thepresent embodiment of the present disclosure.

TABLE 7 Number of Inflexion Inflexion Inflexion Inflexion inflexionpoint point point point points position 1 position 2 position 3 position4 P1R1 1 0.595 P1R2 1 0.135 P2R1 2 0.255 0.615 P2R2 0 P3R1 1 0.735 P3R21 0.715 P4R1 4 0.145 0.885 1.405 1.555 P4R2 1 0.405

TABLE 8 Number of Arrest points Arrest point position 1 P1R1 0 P1R2 10.215 P2R1 1 0.455 P2R2 0 P3R1 0 P3R2 0 P4R1 1 0.255 P4R2 1 1.095

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 430 nm after passing the camera optical lens 20 according toEmbodiment 2. FIG. 8 illustrates a field curvature and a distortion oflight with a wavelength of 555 nm after passing the camera optical lens20 according to Embodiment 2. In FIG. 8, a field curvature S is a fieldcurvature in a sagittal direction, and T is a field curvature in atangential direction.

Table 13 below lists various values of Embodiments 1, 2, 3 and 4, andparameters which are specified in the above conditions.

As shown in Table 17, Embodiment 2 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the cameraoptical lens is 1.248 mm. The image height is 2.300 mm. The FOV along adiagonal direction is 78.00°. Thus, the camera optical lens 10 is anultra-thin, large-aperture, wide-angle lens, thereby leading to betteroptical characteristics.

Embodiment 3

FIG. 9 is a structural schematic diagram of a camera optical lens 30according to Embodiment 3. Embodiment 3 is basically the same asEmbodiment 1 and involves symbols having the same meanings asEmbodiment 1. Only differences therebetween will be described in thefollowing.

Table 10 shows aspheric surface data of respective lenses in the cameraoptical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0= −0.051 R1 1.539 d1= 0.578 nd1 1.5444 ν1 55.82R2 50.298 d2= 0.165 R3 2.905 d3= 0.223 nd2 1.6610 ν2 20.53 R4 1.942 d4=0.265 R5 −3.740 d5= 0.971 nd3 1.5444 ν3 55.82 R6 −0.680 d6= 0.058 R71.865 d7= 0.283 nd4 1.5444 ν4 55.82 R8 0.499 d8= 0.656 R9 ∞ d9= 0.210ndg 1.5168 νg 64.17

Table 10 shows aspheric surface data of respective lenses in the cameraoptical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical coefficient k A4 A6 A8 A10 R1−4.5903E+00  5.3050E−02  1.1770E+00 −1.9486E+01 1.6555E+02 R2 8.8687E+01 −3.2712E−01  5.9697E−02 −7.2322E−01 5.4022E+00 R3−3.2610E+01 −2.4926E−01 −4.3960E−01  1.0662E+00 2.7497E+00 R4 1.8566E+00 −1.4446E−01 −9.8019E−01  7.9962E+00 −4.1005E+01  R5 1.2924E+01  1.3244E−01 −7.2995E−01  4.3806E+00 −2.2857E+01  R6−2.3574E+00  4.0736E−01 −1.7900E+00  4.1676E+00 −6.1224E+00  R7−6.3000E+01 −3.6239E−01  2.8533E−01 −2.5296E−01 3.1229E−01 R8−4.7060E+00 −3.0628E−01  3.5475E−01 −3.3692E−01 2.3357E−01 Asphericalcoefficient A12 A14 A16 A18 A20 R1 −8.6833E+02 2.8366E+03 −5.6299E+036.2122E+03 −2.9242E+03 R2 −2.3706E+01 6.6976E+01 −1.2622E+02 1.4677E+02−7.7778E+01 R3 −1.5906E+01 4.4076E+01 −8.6060E+01 1.1056E+02 −6.4668E+01R4  1.4992E+02 −3.5369E+02   5.0476E+02 −3.9421E+02   1.2924E+02 R5 8.6520E+01 −2.1037E+02   3.1379E+02 −2.6304E+02   9.4816E+01 R6 5.5151E+00 −2.3804E+00  −5.3365E−02 4.0452E−01 −9.8102E−02 R7−2.4061E−01 1.0510E−01 −2.6270E−02 3.5338E−03 −1.9935E−04 R8 −1.1153E−013.5168E−02 −6.9173E−03 7.6425E−04 −3.6132E−05

Table 11 and Table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according to thepresent embodiment of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 1 0.575 P1R2 10.075 P2R1 2 0.265 0.615 P2R2 0 P3R1 1 0.795 P3R2 2 0.775 1.185 P4R1 30.235 0.955 1.785 P4R2 1 0.385

TABLE 12 Number of Arrest point Arrest point Arrest points position 1position 2 P1R1 0 P1R2 1 0.125 P2R1 2 0.475 0.705 P2R2 0 P3R1 0 P3R2 0P4R1 2 0.465 1.365 P4R2 1 1.165

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 430 nm after passing the camera optical lens 30 according toEmbodiment 3. FIG. 12 illustrates field curvature and distortion oflight with a wavelength of 555 nm after passing the camera optical lens30 according to Embodiment 3. In FIG. 12, a field curvature S is a fieldcurvature in a sagittal direction, and T is a field curvature in atangential direction.

Table 17 below lists various values of Embodiments 1, 2, 3 and 4, andparameters which are specified in the above conditions.

As shown in Table 17, Embodiment 3 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the cameraoptical lens is 1.332 mm. The image height is 2.300 mm. The FOV along adiagonal direction is 78.50°. Thus, the camera optical lens 10 is anultra-thin, large-aperture, wide-angle lens in which the on-axis andoff-axis aberrations are sufficiently corrected, thereby leading tobetter optical characteristics.

Embodiment 4

FIG. 13 is a structural schematic diagram of a camera optical lens 40according to Embodiment 4. Embodiment 4 is basically the same asEmbodiment 1 and involves symbols having the same meanings asEmbodiment 1. Only differences therebetween will be described in thefollowing.

Table 13 and Table 14 show design data of a camera optical lens 40 inEmbodiment 4 of the present disclosure.

TABLE 13 R d nd νd S1 ∞ d0= −0.076 R1 1.620 d1= 0.632 nd1 1.5444 ν155.82 R2 26.783 d2= 0.115 R3 1.841 d3= 0.204 nd2 1.6610 ν2 20.53 R41.836 d4= 0.360 R5 −3.432 d5= 0.816 nd3 1.5444 ν3 55.82 R6 −0.756 d6=0.049 R7 2.570 d7= 0.358 nd4 1.5444 ν4 55.82 R8 0.616 d8= 0.656 R9 ∞ d9=0.210 ndg 1.5168 νg 64.17 R10 ∞ d10= 0.246

Table 14 shows aspheric surface data of respective lenses in the cameraoptical lens 40 according to Embodiment 4 of the present disclosure.

TABLE 14 Conic coefficient Aspherical coefficient k A4 A6 A8 A10 R1−4.3685E+00  1.9922E−01 −3.0862E+00  4.0646E+01 −3.2582E+02 R2−6.9958E+01 −3.2355E−01 −3.0670E+00  4.0409E+01 −2.6972E+02 R3−1.6696E+01 −2.3520E−04 −7.8980E+00  1.0013E+02 −7.5143E+02 R4 1.6060E+00  5.9939E−02 −4.7097E+00  4.1513E+01 −2.2485E+02 R5 1.1777E+01 −1.7998E−02  2.0807E+00 −2.1367E+01  1.1231E+02 R6−1.8905E+00  2.3114E−01 −4.9481E−01 −7.3482E−01  5.6560E+00 R7−8.6267E+01 −4.3105E−01  4.0265E−01 −4.1325E−01  4.8152E−01 R8−4.8848E+00 −3.3674E−01  4.1734E−01 −4.2303E−01  3.0415E−01 Asphericalcoefficient A12 A14 A16 A18 A20 R1  1.5701E+03 −4.5938E+03  7.9014E+03−7.2249E+03  2.6273E+03 R2  1.0691E+03 −2.5684E+03  3.6215E+03−2.6983E+03  7.8667E+02 R3  3.5114E+03 −1.0206E+04  1.7933E+04−1.7420E+04  7.1707E+03 R4  7.9762E+02 −1.8285E+03  2.6006E+03−2.0816E+03  7.1556E+02 R5 −3.5319E+02  6.9260E+02 −8.2963E+02 5.5587E+02 −1.5998E+02 R6 −1.3141E+01  1.6852E+01 −1.2328E+01 4.7758E+00 −7.5977E−01 R7 −3.5519E−01  1.5216E−01 −3.7678E−02 5.0453E−03 −2.8411E−04 R8 −1.4769E−01  4.6671E−02 −9.0780E−03 9.7511E−04 −4.3651E−05

Table 15 and Table 16 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 40 according to thepresent embodiment of the present disclosure.

TABLE 15 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 1 0.595 P1R2 10.095 P2R1 3 0.285 0.605 0.685 P2R2 0 P3R1 0 P3R2 2 0.785 1.145 P4R1 20.215 0.945 P4R2 2 0.395 1.865

TABLE 16 Number of Arrest point Arrest point Arrest points position 1position 2 P1R1 0 P1R2 1 0.155 P2R1 0 P2R2 0 P3R1 0 P3R2 0 P4R1 2 0.4051.405 P4R2 1 1.075

FIG. 14 and FIG. 15 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm, 470nm and 430 nm after passing the camera optical lens 40 according toEmbodiment 4. FIG. 16 illustrates a field curvature and a distortion oflight with a wavelength of 555 nm after passing the camera optical lens40 according to Embodiment 4. In FIG. 16, a field curvature S is a fieldcurvature in a sagittal direction, and T is a field curvature in atangential direction.

The following Table 17 shows various values in examples 1, 2, 3, and 4,and values corresponding to parameters specified in the conditions.

As shown in Table 17, Embodiment 4 satisfies the respective conditions.

In the present embodiment, the entrance pupil diameter of the cameraoptical lens is 1.237 mm. The image height is 2.300 mm. The FOV along adiagonal direction is 78.50°. Thus, the camera optical lens 10 is anultra-thin, large-aperture, wide-angle lens, thereby leading to betteroptical characteristics.

The following Table 17 lists values of the corresponding relationalexpressions in Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment4, and parameters according to the above conditions.

TABLE 17 Parameters and Embodi- Embodi- Embodi- Embodi- conditions ment1 ment 2 ment 3 ment 4 R1/R2 0.06 0.09 0.03 0.06 R3/R4 1.33 1.49 1.501.00 R5/R6 4.50 3.51 5.50 4.54 d1/d2 4.70 5.47 3.50 5.50 f 2.748 2.7452.735 2.720 f1 3.107 2.675 2.895 3.156 f2 −13.211 −11.623 −9.682 −15.700f3 1.607 1.574 1.369 1.604 f4 −1.569 −1.456 −1.346 −1.594 f12 3.6163.123 3.602 3.573 Fno 2.20 2.20 2.20 2.20

Fno is an F number of the camera optical lens.

Those skilled in the art can understand that the above are some of theembodiments of the present disclosure. In practice, those skilled in theart can make various modifications in terms of forms and details withoutdeparting from the spirit and scope of the present disclosure.

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side: a first lens; a second lens; a third lens; and afourth lens, wherein the camera optical lens satisfies followingconditions:0.03≤R1/R2≤0.10;1.00≤R3/R4≤1.50;3.50≤R5/R6≤5.50; and3.50≤d1/d2≤5.50, where R1 denotes a curvature radius of an object sidesurface of the first lens; R2 denotes a curvature radius of an imageside surface of the first lens; R3 denotes a curvature radius of anobject side surface of the second lens; R4 denotes a curvature radius ofan image side surface of the second lens; R5 denotes a curvature radiusof an object side surface of the third lens; R6 denotes a curvatureradius of an image side surface of the third lens; d1 denotes an on-axisthickness of the first lens; and d2 denotes an on-axis distance from theimage side surface of the first lens to the object side surface of thesecond lens.
 2. The camera optical lens as described in claim 1, furthersatisfying a following condition:−0.30≤f1/f2≤−0.20, where f1 denotes a focal length of the first lens;and f2 denotes a focal length of the second lens.
 3. The camera opticallens as described in claim 1, further satisfying following conditions:0.49≤f1/f≤1.74;−2.40≤(R1+R2)/(R1−R2)≤−0.71; and0.08≤d1/TTL≤0.26, where f denotes a focal length of the camera opticallens; f1 denotes a focal length of the first lens; and TTL denotes atotal optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 4. Thecamera optical lens as described in claim 1, further satisfyingfollowing conditions:−11.54≤f2/f≤−2.36;2.52≤(R3+R4)/(R3−R4)≤1103.10; and0.03≤d3/TTL≤0.10, where f denotes a focal length of the camera opticallens; f2 denotes a focal length of the second lens; d3 denotes anon-axis thickness of the second lens; and TTL denotes a total opticallength from the object side surface of the first lens to an image planeof the camera optical lens along an optic axis.
 5. The camera opticallens as described in claim 1, further satisfying following conditions:0.25≤f3/f≤0.88;0.72≤(R5+R6)/(R5−R6)≤2.70; and0.11≤d5/TTL≤0.40, where f denotes a focal length of the camera opticallens; f3 denotes a focal length of the third lens; d5 denotes an on-axisthickness of the third lens; and TTL denotes a total optical length fromthe object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.
 6. The camera optical lens asdescribed in claim 1, further satisfying following conditions:−1.17≤f4/f≤−0.33;0.59≤(R7+R8)/(R7−R8)≤2.60; and0.04≤d7/TTL≤0.18, where f denotes a focal length of the camera opticallens; f4 denotes a focal length of the fourth lens; R7 denotes acurvature radius of an object side surface of the fourth lens; R8denotes a curvature radius of an image side surface of the fourth lens;d7 denotes an on-axis thickness of the fourth lens; and TTL denotes atotal optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 7. Thecamera optical lens as described in claim 1, further satisfying afollowing condition:TTL/IH≤1.60, where IH denotes an image height of the camera opticallens; and TTL denotes a total optical length from the object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 8. The camera optical lens as described in claim 1,further satisfying a following condition:FNO≤2.20, where FNO denotes an F number of the camera optical lens. 9.The camera optical lens as described in claim 1, further satisfying afollowing condition:FOV≥78°, where FOV denotes a field of view of the camera optical lens.10. The camera optical lens as described in claim 1, further satisfyinga following condition:0.57≤f12/f≤1.98, where f denotes a focal length of the camera opticallens; and f12 denotes a combined focal length of the first lens and thesecond lens.